Retraction notices

Research on Mobile English Learning System Based on iOS

Type
Retraction
Notice date
12/29/2023 0:00
Journal
Security and Communication Networks
Publisher
Hindawi
Notice DOI
10.1155/2023/9869568
Original paper DOI
10.1155/2021/6336565

Reasons

Matching venue names

Name match only, not an authoritative journal identifier.